.bubble_loading {
    position: relative;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    background-image: linear-gradient(45deg, rgb(14, 14, 46), rgb(64, 64, 113));
    border-radius: 100%;
    font-size: 12px;
    font-weight: bold;
    color: white;
    box-shadow: 0 3px 2px 1px rgba(0, 0, 0, 0.2);
}
/* 伪元素 */
.bubble_loading::before,
.bubble_loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -20px;
    margin-top: -20px;
    width: 40px;
    height: 40px;
    background: rgb(51, 149, 230);
    border-radius: 100%;
    z-index: -1;
    transform: translateY(-2px);
}
.bubble_loading::before {
    animation: rotate2 infinite 3s linear;
}
.bubble_loading::after {
    animation: rotate2 infinite 2s linear;
}
@keyframes rotate2 {
    0% {
        transform: rotate(0deg) translateY(-2px);
    }
    100% {
        transform: rotate(360deg) translateY(-2px);
    }
}

